Octamed on the Amiga, everything else is just sideways .

 

Hm, back when I used Ableton Live regularly I was quite satisfied with the stock plugins, only collecting more plugins for fun or because they were trendy.
Nowadays, if I were to reduce myself as much as possible while staying in Reaper, my choice would be (approximately) as follows:
- FabFilter Total Bundle (has all the basic necessities and enough options for more creativity)
- IK Multimedia Amplitube (as I play loads of guitar and don't have a proper physical amp)
- MeldaProduction (FreeFXBundle and some additional tools depending on what I intend to do - music production, post production, restauration..)
- Native Instruments Kontakt (some nice piano libraries in there, Una Corda is one example)
- sonible smartGate and smartLimit
- Spectrasonics Keyscape (greatest keys I know, need I say more?)
- Toontrack Superior Drummer 3 (in case no drums and/or drummer available)
- Xfer Serum 1/2 (once again, need I say more?)

There are some more plugins that are very nice to have and ease the workflow a lot, but going for essentials that should be it.